POW Contours and Regions

Contours:

The image below shows a set of contours overlain on top of an
image. The blue contours were made from a separate radio map image and
then moved to this graph containing an optical image of the same
object. The dialog box shows the options available for creating
contours.

Regions:

Region shapes supported are circle, ellipse, box, polygon, point,
and line. Shapes can be inclusive ('+' shapes drawn in grey) or
exclusive ('-' shapes drawn in red). All shapes can be moved and
reshaped with the mouse by dragging the green handles drawn on the
current shape.